ZINSCO RC38-50 U 50A 240V 2P

Description:

The Zinsco RC38-50 U is a molded case circuit breaker designed for use in Zinsco load centers, providing overcurrent protection for 120/240V circuits. It interrupts electrical flow during overloads or short circuits to protect wiring and connected equipment. This breaker is part of the R-38 thin/tandem series, allowing a 2-pole 240V circuit in a compact breaker space. It is typically used as a replacement component in legacy Zinsco electrical panels.

Applications:

The Zinsco RC38-50 breaker is used in residential and light commercial electrical panels to protect circuits feeding high-load equipment such as HVAC units, electric ranges, dryers, and water heaters. It is specifically designed for compatibility with Zinsco/Sylvania/Challenger panel systems and is commonly used in maintenance or repair of older installations.

Technical Specifications:

• Manufacturer Part Number (MPN): RC38-50 / RC3850
• Product Type: Molded Case Circuit Breaker
• Poles: 2-pole
• Phase: Single-phase (1PH)
• Rated Current: 50 Amps
• Rated Voltage: 120/240 V AC
• Mounting Type: Plug-in (Zinsco panel compatible)
• Breaker Type: Thermal-magnetic
• Design: Thin / tandem (R-38 frame)
• Interrupt Rating: ~10,000 AIC (replacement equivalents)
• Application: Branch circuit protection for 240V loads

Common Replacements:

• Connecticut Electric UBIZ0250 50A Replacement Breaker
• Zinsco UBIZ0250 Thin 2‑Pole Breaker
• Full panel upgrade (Siemens, Eaton, Square D) for long-term reliability